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Product Name: 3-(1,2,3,4-Tetrahydro-1-Naphthyl)-4-Hydroxycoumarin
Chemical Formula: C19H16O3
SYNONYMS: No common trade names identified.
Recommended Uses: Research chemical, laboratory reagent.
Supplier Contact: Chemical manufacturer or distributor, contact information specific to supplier.
Emergency Telephone: Regional Poison Control Center or supplier’s emergency hotline.
CAS Number: 148-79-8
Classification: Harmful if swallowed, may cause skin and eye irritation, potential toxicant with suspected risks for blood clotting and hepatic metabolism.
Signal Word: Warning
Hazard Statements: May cause eye, skin, and respiratory tract irritation; may be harmful if ingested or absorbed through skin; suspected of affecting blood and liver function.
Precautionary Statements: Wear appropriate protective gear; avoid contact with skin, eyes, and clothing; do not eat, drink, or smoke when using this substance; wash thoroughly after handling; keep container tightly closed.
Label Elements: Pictograms for irritant and health hazard.
Chemical Identity: 3-(1,2,3,4-Tetrahydro-1-Naphthyl)-4-Hydroxycoumarin
PURITY: Typically >98% pure
Impurities: Trace levels of unreacted naphthalene derivatives, solvent residues depending on batch
Ingredient List: Main active substance, no essential additives or stabilizers referenced
Inhalation: Move affected person to fresh air, keep at rest, seek medical advice if symptoms persist.
Skin Contact: Remove contaminated clothing, rinse skin with plenty of running water, use soap; get medical attention for persistent irritation.
Eye Contact: Immediately flush with water for at least 15 minutes, keep eyes wide open; consult medical provider right away.
Ingestion: Rinse mouth, do not induce vomiting, provide water if conscious, obtain urgent medical attention.
Notes for Medical Personnel: Monitor for symptoms of poisoning, provide symptomatic and supportive care.
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, foam, or water spray.
Specific Hazards: Emits hazardous fumes of carbon oxides under fire conditions; combustion byproducts may be irritating.
Protective Equipment: Firefighters require self-contained breathing apparatus and full protective gear.
Special Precautions: Prevent runoff from entering drains, dikes for firefighting water; approach from upwind to avoid inhalation.
Personal Precautions: Isolate the spill area, use gloves, goggles, mask, and protective clothing to prevent exposure.
Environmental Precautions: Contain spills, avoid release to soil, surface and groundwater, prevent spread via drains.
Cleanup Methods: Scoop or sweep up gently without creating dust, use inert absorbent material, transfer to labeled waste container for safe disposal.
Ventilation: Ensure proper air circulation in area of spill to reduce inhalation risk.
Handling: Wear protective gloves, eye/face protection, and minimize dust generation; avoid direct inhalation or skin contact; handle in a chemical fume hood if possible; keep away from food and drinks.
Storage: Keep container tightly closed in a cool, dry, and ventilated place; secure away from incompatible materials such as strong oxidizers; store locked and restrict access to trained personnel; label container clearly.
Hygiene Measures: Wash hands before breaks and after handling, implement spill protocols.
Engineering Controls: Use fume hood, local exhaust ventilation to avoid airborne exposure.
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), splash-proof goggles, laboratory coat or apron, dust mask or respirator (P2 or higher), closed footwear.
Exposure Limits: No established occupational exposure limits for this compound.
Environmental Controls: Prevent escape into environment, use procedures to avoid dust formation and emission.
Appearance: Off-white to pale yellow crystalline solid
Odor: Characteristic, faint, non-penetrating
pH (aqueous): Not soluble
Melting Point: 116–120°C (literature values vary)
Boiling Point: Decomposes before boiling
Flash Point: Not determined, estimated >200°C
Solubility: Sparingly soluble in water, soluble in ethanol, DMSO, and organic solvents
Vapor Pressure: Not significant at room temperature
Density: Approximately 1.25 g/cm³
Stability: Stable under normal conditions, degrades upon prolonged exposure to heat or light
Partition Coefficient: Not determined
Stability: Remains stable at room temperature in sealed container; keep away from excessive heat, moisture, and light.
Reactivity: May react with strong oxidizers, acids, or alkali; avoid contact with incompatible chemicals.
Hazardous Decomposition Products: Produces carbon monoxide, carbon dioxide, and possibly toxic organic vapors during thermal decomposition.
Polymerization: No known risk of hazardous polymerization; avoid mixing with reactive chemicals.
Acute Toxicity: Data on LD50 values not available, presumed low to moderate oral and dermal toxicity by analogy to structural homologs.
Routes of Exposure: Inhalation, ingestion, dermal, and ocular.
Health Effects: May cause irritation of eyes, skin, and mucous membranes; ingestion may result in headache, nausea, dizziness, anticoagulant effects, hepatic disturbance; chronic exposure can lead to blood and liver changes.
Sensitization: No evidence from animal or human data, but general caution warranted.
Carcinogenicity, Mutagenicity, Teratogenicity: Not classified by IARC, NTP, or ACGIH; no comprehensive data.
Aquatic Toxicity: Limited data; may have deleterious effects on aquatic organisms based on chemical structure; avoid discharge into waterways.
Persistence and Biodegradability: Not rapidly biodegradable, likely persists under environmental conditions.
Bioaccumulative Potential: Tends toward accumulation in sediment and possibly biota due to hydrophobic characteristics.
Other Adverse Effects: Interferes with aquatic life by potential anticoagulant action, reduce environmental exposure by good waste management.
Disposal Methods: Dispatch via licensed chemical waste contractor; collect in sealed, labeled containers; incinerate in accordance with local, regional, and national regulations.
Contaminated Packaging: Rinse thoroughly, treat as hazardous waste; comply with relevant hazardous waste laws.
Disposal Precautions: Do not allow runoff or leftover material to reach sewers or open bodies of water; avoid dust generation during disposal.
UN Number: Not classified under current United Nations dangerous goods codes for transport
Transport Hazard Class: Not assigned special hazard class
Packing Group: Not applicable without a hazard class
Shipping Instructions: Ship in tightly closed container, cushioned securely, segregate from food, oxidizers, and incompatible materials; label as a research chemical.
Environmental Hazards: Not marine pollutant by transport authority criteria, but accidental release should be prevented.
OSHA Status: Not specifically regulated
TSCA Inventory: Included for research and development use
Regulatory Listings: Not found on major international chemical control lists; local, regional, or state restrictions may apply depending on use, always verify compliance before use or shipment.
Safety Assessment: Managed as hazardous laboratory compound; apply chemical hygiene plan and conduct risk assessments prior to purchase, storage, or use.
